these 2 derivations will be built:
  /nix/store/xbg0l5rr35vrqia8xx5s4psh51w24iz9-nix-grpc-store-0.1.0.drv
  /nix/store/x9zz6d2qjv0mqwxz8id5rvp24dn59zs1-nix-grpc-store-exit-stress.drv